------------[ cut here ]------------
WARNING: CPU: 0 PID: 14055 at drivers/gpu/drm/vkms/vkms_gem.c:37 vkms_gem_free_object+0x8d/0xa0 drivers/gpu/drm/vkms/vkms_gem.c:37
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 14055 Comm: syz-executor.0 Not tainted 5.9.0-rc8-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1d6/0x29e lib/dump_stack.c:118
 panic+0x2c0/0x800 kernel/panic.c:231
 __warn+0x227/0x250 kernel/panic.c:600
 report_bug+0x1b1/0x2e0 lib/bug.c:198
 handle_bug+0x42/0x80 arch/x86/kernel/traps.c:234
 exc_invalid_op+0x16/0x40 arch/x86/kernel/traps.c:254
 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536
RIP: 0010:vkms_gem_free_object+0x8d/0xa0 drivers/gpu/drm/vkms/vkms_gem.c:37
Code: a9 ee d3 fc 49 8d be 30 02 00 00 e8 fd 66 b8 fc 4c 89 f7 e8 75 ba 9d ff 4c 89 f7 5b 41 5e 41 5f e9 88 43 13 fd e8 83 ee d3 fc <0f> 0b eb ae e8 7a ee d3 fc 0f 0b eb cd 66 0f 1f 44 00 00 55 41 57
RSP: 0018:ffffc900175d7ce0 EFLAGS: 00010283
RAX: ffffffff84a10f6d RBX: ffff88809e3b0ac0 RCX: 0000000000040000
RDX: ffffc90007be9000 RSI: 0000000000001e25 RDI: 0000000000001e26
RBP: ffff88809e3b0800 R08: ffffffff843eaec9 R09: ffffed1013c76101
R10: ffffed1013c76101 R11: 0000000000000000 R12: ffff88809036bb30
R13: dffffc0000000000 R14: ffff88809e3b0800 R15: dffffc0000000000
 drm_gem_object_release_handle+0x150/0x160 drivers/gpu/drm/drm_gem.c:260
 drm_gem_handle_delete+0x64/0xa0 drivers/gpu/drm/drm_gem.c:288
 drm_ioctl_kernel+0x2f3/0x430 drivers/gpu/drm/drm_ioctl.c:787
 drm_ioctl+0x585/0x910 drivers/gpu/drm/drm_ioctl.c:887
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl+0xfb/0x170 fs/ioctl.c:739
 do_syscall_64+0x31/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45de29
Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f5f25b4bc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000000c540 RCX: 000000000045de29
RDX: 00000000200000c0 RSI: 00000000c00464b4 RDI: 0000000000000008
RBP: 000000000118bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c
R13: 00007ffe213d0ebf R14: 00007f5f25b4c9c0 R15: 000000000118bf2c
Kernel Offset: disabled
Rebooting in 86400 seconds..